CN105870679B - General-purpose serial bus USB connecting line and battery testing system - Google Patents

Abstract

The invention discloses a universal serial bus USB connection line and a battery detection system. The USB connection line includes a positive wire and a negative wire, the first end of the positive wire and the first end of the negative wire are connected to a USB interface, the USB interface is used to connect with the device under test, and the USB connection line The data positive pole and the data negative pole are short-circuited, the second end of the positive wire is used to connect with the positive output port of the charger simulation device capable of outputting operating parameters, and the second end of the negative wire is used to connect with the charger simulation Connect to the negative output port of the device. The embodiment of the present invention obtains a USB connection line that can connect the charger simulation device with the device under test by modifying the USB connection line, so that the tester can use the charger simulation device to measure the total power consumption of the device under test. The current is measured to improve the test efficiency.

Description

Universal serial bus USB connection cable and battery detection system

technical field

Embodiments of the present invention relate to battery detection technology, in particular to a Universal Serial Bus (Universal Serial Bus, USB) connection line and a battery detection system.

Background technique

With the continuous development of electronic equipment, users have higher and higher requirements for batteries of electronic equipment. In order to improve the yield rate of the battery, the manufacturer usually conducts a charge test on the battery of the mobile phone before the electronic device (such as a mobile phone) leaves the factory.

During the charging test, the charging current of the mobile phone is measured by the chip inside the mobile phone. However, when the total power consumption current of the mobile phone needs to be measured, the total power consumption current cannot be obtained only according to the charging current. It can be seen that the prior art cannot measure the total power consumption current of a mobile phone.

Contents of the invention

The invention provides a USB connection line and a battery detection system to realize the measurement of the total power consumption current of the electronic equipment.

In the first aspect, the embodiment of the present invention provides a universal serial bus USB connection line, including a positive lead and a negative lead, the first end of the positive lead and the first end of the negative lead are connected to the USB interface, so The USB interface is used to connect with the device under test, the data positive pole and the data negative pole of the USB connection line are short-circuited, and the second end of the positive pole wire is used to connect with the positive pole output port of the charger analog device capable of outputting working parameters , the second end of the negative wire is used to connect with the negative output port of the charger simulation device.

In the second aspect, the embodiment of the present invention also provides a battery detection system, the system includes a device under test, a charger simulation device capable of outputting operating parameters, and the USB connection cable shown in the first aspect, the device under test Connect with the charger simulation device through the USB connection line.

The embodiment of the present invention provides a USB connection line, the charger simulation device can be connected with the device under test by using the USB connection line, and the total power consumption current of the device under test can be obtained through the working parameters output by the charger simulation device . In the prior art, the charger simulation device cannot be connected with the device under test, so that the total power consumption current of the device under test cannot be measured. The embodiment of the present invention obtains a USB connection line that can connect the charger simulation device with the device under test by transforming the USB connection line, so that the tester can use the charger simulation device to measure the total power consumption of the device under test. The current is measured to improve the test efficiency.

Description of drawings

FIG. 1 is a schematic structural diagram of a USB connection cable provided by Embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of a USB connection cable provided in Embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a USB connection cable provided by Embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of a USB connection cable provided in Embodiment 4 of the present invention;

FIG. 5 is a schematic structural diagram of another USB connection cable provided by Embodiment 4 of the present invention;

FIG. 6 is a schematic structural diagram of a battery detection system provided in Embodiment 5 of the present invention;

FIG. 7 is a schematic structural diagram of a battery detection system provided by Embodiment 7 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Embodiment one

Fig. 1 is a schematic structural diagram of a universal serial bus USB connection line 1 provided by Embodiment 1 of the present invention, including a positive lead wire 1-1 and a negative lead lead 1-2, the first end of the positive lead wire 1-1 and the The first end of the negative wire 1-2 is connected to the USB interface, and the USB interface is used to connect 2 with the device under test, and the positive data 1-3 and the negative data 1-4 of the USB connection line 1 are short-circuited, so The second end of the positive wire 1-1 is used to connect with the positive output port of the charger simulation device 3 capable of outputting operating parameters, and the second end of the negative wire 1-2 is used to connect with the charger simulation device 3 The negative output terminal connection.

Wherein, the device under test may be a mobile phone (smart phone or non-smart phone), a tablet computer, a notebook computer, a smart wearable device, and other electronic devices with batteries.

The charger simulation device 3 capable of outputting operating parameters may be a power supply device capable of outputting a constant current (or voltage) and displaying the output current value (or voltage). In an implementation manner, a programmable power supply may be selected as the charger simulation device 3 . The program-controlled power supply can generate stable high-power industrial frequency voltage and current signals with adjustable amplitude, frequency and phase angle. It is mainly used for the test and verification of current, voltage, phase, frequency and power meters; it can also be used with standard power meters to verify and verify the basic error, creep and sensitivity of power meters (watt-hour meters). Exemplarily, a three-phase program-controlled precision test power supply, a single-phase program-controlled precision test power supply, or a DC stabilized voltage and current stabilized power supply can be used. Preferably, use Agilent66319D programmable power supply. Since electronic devices usually use direct current for charging when charging, the programmable power supply can be controlled to output a constant current.

Currently, an electronic device (such as a mobile phone or a tablet computer) can be connected to a transformer through a USB connection line 1, and connected to a 220V power supply through the transformer. In the embodiment of the present invention, a USB connection line 1 suitable for battery testing can be obtained by modifying the current USB connection line 1 used in electronic equipment. Short-circuit the data positive poles 1-3 (data+) and data negative poles 1-4 (data-) of the USB data line during transformation, so that the USB data line can save the data transmission of the USB connection line 1 while retaining the original interface shape function, retaining the power transmission function.

Optionally, when short-circuiting the data positive electrodes 1-3 and the data negative electrodes 1-4, first use scissors, pliers and other tools to cut the USB data cable, and then use a welding tool or a wire connection tool to connect the data in the USB data cable Positive pole 1-3 and data negative pole 1-4 are shorted. Optionally, the pins of the positive data poles 1-3 and the pins of the data negative poles 1-4 on the USB interface are short-circuited to realize the short-circuiting of the data positive poles 1-3 and the data negative poles 1-4.

With different brands and models of electronic devices (such as mobile phones or tablet computers), the shapes of the connectors of the USB cable 1 are also different. The same thing is that the USB interface is composed of positive power supply, negative power supply, positive data 1-3 (data+) and negative data 1-4 (data-). Therefore, based on the improvement described above, the positive data poles 1-3 and negative data poles 1-4 of the USB connection line 1 of any electronic device can be short-circuited to obtain an improved USB data line according to the embodiment of the present invention.

The first end of the positive lead 1-1 and the first end of the negative lead 1-2 are connected to the USB interface, specifically: the first end of the positive lead 1-1 is connected to the positive pin of the USB interface. Fixed connection; the first end of the negative wire 1-2 is fixedly connected to the negative pin of the USB interface.

The positive pin and the negative pin of the USB interface of the USB data cable are made of conductive material, and are used to cooperate with the positive pin and the negative pin on the USB interface of the electronic device.

When the electronic device judges the type of the cable inserted into the USB interface, it judges whether the potential difference between the positive data pole 1-3 and the negative data pole 1-4 of the USB interface is 0. When the potential difference is 0, since the power line does not have data positive 1-3 wire 1 and data negative 1-4 wire 2, the potential difference of data positive 1-3 and data negative 1-4 on the USB interface obtained by the electronic device It is 0, so it is determined that the USB interface is inserted into a power line; otherwise, if it is not 0, it is determined that the USB interface is inserted into a data line. When it is determined that the USB interface is plugged into the power cord, the electronic device charges the battery.

The embodiment of the present invention provides a USB connection line 1, and the charger simulation device 3 can be connected with the device under test by using the USB connection line 1, and the operating parameters output by the charger simulation device 3 can be used to obtain the parameters of the device under test. total power dissipation current. In the prior art, it is impossible to connect the charger simulation device 3 with the device under test, so that the total power consumption current of the device under test cannot be measured. In the embodiment of the present invention, by modifying the USB connection line 1, a USB connection line 1 that can connect the charger simulation device 3 to the device under test is obtained, so that the tester can use the charger simulation device 3 to test the device under test. The total power consumption current is measured to improve the test efficiency.

Embodiment two

FIG. 2 is a schematic structural diagram of a USB connection cable 1 provided by Embodiment 2 of the present invention, as a further description of Embodiment 1. As shown in FIG. When electronic equipment judges the type of cable inserted into the USB interface, different equipment manufacturers have different judgment methods; and impurities such as impurities are produced during the production process, resulting in a difference between the positive data 1-3 and the negative data 1-4 of the USB interface. The potential difference between is not necessarily 0, and at this time, there may be a problem of misjudgment according to the method provided in Embodiment 1. Based on this, a preset resistor 5 is connected in series between the positive data pole 1-3 and the negative data pole 1-4 of the USB interface.

Wherein, the resistance value of the preset resistor 5 is greater than 0. Optionally, the resistance value of the preset resistor 5 is 0.5-2 ohms, preferably 1 ohm. The preset resistor 5 is used to provide a stable preset voltage difference for the positive data electrodes 1-3 and the negative data electrodes 1-4. The electronic device judges whether the voltage difference between the data positive pole 1-3 and the data negative pole 1-4 of the USB interface is the preset voltage difference. If the voltage difference is the preset voltage difference, it can be determined that the inserted cable is a power cable; if the voltage difference is not the preset voltage difference, it can be determined that the inserted cable is a data cable.

In this embodiment, by setting a preset resistor 5 between the positive lead 1-1 of the USB connection line 1 and the abdominal muscle lead, the correct rate of identification of the electronic device for the power line can be improved, and the battery detection efficiency can be improved.

Embodiment three

FIG. 3 is a schematic structural diagram of a USB connection cable 1 provided by Embodiment 3 of the present invention, as a further description of the above embodiment. Since the shapes of the USB interfaces of electronic devices from different manufacturers are not the same, it is time-consuming and labor-intensive to manufacture corresponding USB connection cables 1 for electronic devices with different shapes of USB interfaces in the above-mentioned embodiment. Based on this, the embodiment of the present invention provides a USB connection cable 1 , the USB connection cable 1 is connected to an electronic device through a preset USB connection cable 4 .

Specifically, the USB interface of the USB connection line 1 is a male interface, which is used to cooperate with the USB female interface at one end of the preset USB connection line 4, and the other end of the preset USB connection line 4 is connected to the device under test. 2; or, the USB interface is a female interface, which is used to cooperate with the USB male interface at one end of the preset USB connection line 4 .

The male port and the female button of the USB interface cooperate to realize the USB connection. The preset USB connection line 4 is a connection line configured for the device under test. The USB socket at one end of the connection line matches the device under test, and the USB socket at the other end matches the USB interface of the present invention. There are two ways to match, one is to provide a female port for the preset USB connection line 4, and the USB connection line 1 of the present invention provides a male port; the other is to provide a male port for the preset USB connection line 4. The USB connection of the present invention Line 1 provides the female port. Preferably, the USB connection line 1 provided by the present invention provides a female port, and the preset USB connection line 4 provides a male port.

In the technical solution provided by this embodiment, since the preset USB connection line 4 configured by the device under test can be used to convert the interface, it is not necessary to improve the USB connection line 1 for different brands and models of the device under test. The connecting line 1 can perform battery testing on different types of devices under test, which reduces test costs and improves test efficiency.

Embodiment four

The embodiment of the present invention also provides a USB connection cable 1 as a further description of the above embodiment. When the USB connection line 1 is connected to the charger simulation device 3 , the structures of the second end of the positive wire 1 - 1 and the second end of the negative wire 1 - 2 need to be compatible with the external interface structure of the charger simulation device 3 .

Taking the program-controlled power supply as an example, in one implementation manner, the program-controlled power supply provides a high-voltage interface and a ground port (low-voltage port) respectively. At this time, the second end of the positive lead 1-1 is connected to the high voltage interface of the programmable power supply, and the second end of the negative lead 1-2 is connected to the ground port of the programmable power supply. The connection method can be welding, supersaturated fit connection after insertion, etc.

However, this method needs to connect the positive lead wire 1-1 and the negative lead wire 1-2 respectively, which involves repetitive actions and low connection efficiency. Based on this, the present embodiment also provides a USB connection cable 1, the second end of the positive lead 1-1 of the USB connection 1 and the second end of the negative lead 1-2 form a serial interface. The serial interface is used to insert into the electric energy serial output interface of the charger analog device, and the electric energy serial output interface includes a positive output port and a negative output port, and the positive output port is correspondingly connected to the positive lead wire 1-1 The second end, the negative output port is correspondingly connected to the second end of the negative lead wire 1-2.

Optionally, when combining the second end of the positive lead 1-1 with the second end of the negative lead 1-2, the positive lead 1-1 can be connected to the serial interface in the manner shown in FIG. Connected to the top of the serial port, connect the negative wire 1-2 to the groove on the neck of the serial port. At the same time, the charger analog device is used as a power output device (such as a program-controlled power supply), and the power serial output interface on it has a jack structure design corresponding to the serial interface.

Optionally, when combining the second end of the positive lead wire 1-1 with the second end of the negative lead lead 1-2, it can also be combined in the manner shown in FIG. The pins of part A of the serial interface are connected, and the negative wires 1-2 are connected with the pins of part B of the serial interface. The pins of part A and the pins of part B together form all or part of the pins of the serial interface. At the same time, the charger analog device is used as a power output device (such as a program-controlled power supply), and the power serial output interface on it has a jack structure design corresponding to the serial interface.

It should be noted that, the positions and numbers of the pins of the part A and the pins of the part B can be adaptively adjusted according to different types of serial interfaces. The serial interface can be RS-232, RS-422 or RS-485, etc.

In this embodiment, after the second end of the positive lead 1-1 and the second end of the negative lead 1-2 form the serial interface, they can be connected to the program-controlled power supply through an excuse, which can simplify the production process of the USB connection line 1 and reduce the The production cost of the USB cable 1.

Embodiment five

FIG. 6 is a schematic structural diagram of a battery detection system provided in Embodiment 5 of the present invention, and the system is used in combination with the USB connection cable 1 provided in Embodiment 1 to Embodiment 4 to provide a battery detection system. The battery detection system includes the device under test, a charger simulation device 3 capable of outputting operating parameters, and the USB connection line 1 provided in Embodiment 1 to Embodiment 4, and the device under test communicates with the charger simulation through the USB connection line 1 Device 3 is connected.

Optionally, the charger simulation device 3 is a programmable power supply.

When using the battery detection system provided by the embodiment of the present invention, the tester first connects one end of the USB connection line 1 to the charger simulation device 3 capable of outputting operating parameters, and then connects the other end of the USB connection line 1 to the device under test. connect2. After connection, the user controls the charger simulation device 3 capable of outputting operating parameters to output a constant current (or voltage). When the charger simulation device 3 (such as a programmable power supply) enters the working state, the charger simulation device 3 will display its output constant current (or voltage) through the display. If the output of the charging simulation device is a constant DC current, the inspector can determine the total power consumption current of the device under test by reading the current value displayed by the charger simulation device 3 .

Embodiment six

Embodiment 6 of the present invention provides a battery detection system. Referring to FIG. 3 , further, the system further includes: a preset universal serial bus USB connection line 1, one end of the preset universal serial bus USB connection line 1 It is connected with the device under test 2, and the other end is matched with the USB interface of the USB connection line 1. When using the battery detection system provided by the embodiment of the present invention, the tester first connects one end of the USB connection line 1 to the charger simulation device 3 capable of outputting operating parameters, and then connects the preset USB connection line 4 to the device under test , and then connect the USB connection line 1 of the present invention with the preset USB connection line 4 . After connection, the charger simulation device 3, the USB connection line 1 of the present invention, the preset USB connection line 4 and the device under test are connected in sequence. After connection, the user controls the charger simulation device 3 to output a constant current (or voltage). When the charger simulation device 3 (such as a programmable power supply) enters the working state, the charger simulation device 3 will display its output constant current (or voltage) through the display. If the output of the charging simulation device is a constant DC current, the inspector can determine the total power consumption current of the device under test by reading the current value displayed by the charger simulation device 3 .

By using the preset USB connection line 4 of the device under test to convert the interface, it is not necessary to improve the USB connection line 1 for different brands and models of the device under test, and then only one USB connection line 1 can be used for different models. The device under test is tested for batteries, reducing test costs and improving test efficiency.

Further, the power serial output interface of the charger simulation device 3 is connected to the USB connection line 1 .

The power serial output interface of the charger simulation device 3 can be set with reference to the serial interface of the USB connection line 1 shown in FIG. 4 and FIG. 5 . By combining the positive wire 1-1 and the negative wire 1-2 of the USB connection line 1 through the serial interface, the connection cost between the USB connection line 1 and the charger analog device 3 can be reduced.

In one usage scenario, the device under test is a mobile phone (smart phone or non-smart phone), at this time, the USB interface of the USB connection line 1 cooperates with the charging interface of the mobile phone. At present, the mobile phone has realized the combination of the charging interface and the data transmission interface (wired transmission). After matching the USB interface of the USB connection line 1 with the charging interface of the mobile phone, the battery of the mobile phone can be detected.

Embodiment seven

FIG. 7 is a schematic structural diagram of a battery detection system provided by Embodiment 7 of the present invention. Further, the system further includes a control terminal 5 , and the charger simulation device 3 is connected to the control terminal 5 .

The control terminal 5 can be a notebook computer, a personal computer or a server, etc., and the charger simulation device 3 communicates with the control terminal 5 through the plug-and-play interface of the control terminal 5 . The user can control at least one charger simulation device 3 to output a constant current (or voltage) signal through the control terminal 5 . At the same time, the user can receive the actual output value sent by at least one charger simulation device 3 through the control terminal 5 . After the control terminal 5 receives the actual output value (the actual output voltage value or current value) sent by the charger simulation device 3 , it displays the actual output value. Furthermore, the user can perform further calculations based on the actual output value.

In this embodiment, one or more charger simulation devices 3 can be controlled through the control terminal 5 to improve battery testing efficiency.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (8)

1. A Universal Serial Bus (USB) connection line, characterized in that, comprises positive lead and negative lead, the first end of the positive lead and the first end of the negative lead are connected to the USB interface, the positive lead The second end is used to be connected with the positive output port of the charger analog device capable of outputting operating parameters, and the second end of the negative wire is used to be connected with the negative output port of the charger analog device; the data of the USB interface There is a preset resistor in series between the positive pole and the data negative pole; Wherein, the USB interface is used to connect with the device under test, the device under test is configured with a preset USB connection line, the USB socket at one end of the preset USB connection line matches the device under test, and the preset USB connection The USB socket at the other end of the line matches the USB interface, and the USB interface is a male interface, which is used to cooperate with the USB female interface at the other end of the preset USB connection line, or, the USB interface is a female port The interface is used to cooperate with the USB male interface at the other end of the preset USB connection line. 2. The USB connection cable according to claim 1, wherein the first end of the positive wire and the first end of the negative wire are connected to a USB interface, comprising: The first end of the positive wire is fixedly connected to the positive pin of the USB interface; The first end of the negative wire is fixedly connected to the negative pin of the USB interface. 3. The USB connection cable according to claim 1, wherein the second end of the positive wire and the second end of the negative wire form a serial interface, and the serial interface is used for plugging into a charger to simulate The electrical energy serial output interface of the device, the electrical energy serial output interface includes a positive output port and a negative output port, the positive output port is correspondingly connected to the second end of the positive wire, and the negative output port is correspondingly connected to the negative The second end of the wire. 4. A battery detection system, characterized in that the system comprises a device under test, a charger simulation device capable of outputting operating parameters, and the USB connection cable according to any one of claims 1-3, the device under test The device is connected with the charger simulation device through the USB connection line. 5. The battery detection system according to claim 4, characterized in that, the system further comprises: a preset universal serial bus USB connection line, one end of the preset universal serial bus USB connection line is connected to the tested The device is connected, and the other end cooperates with the USB interface of the USB cable. 6 . The battery detection system according to claim 4 , wherein the power serial output interface of the charger simulation device is connected to the USB connection line. 7 . 7. The battery detection system according to claim 4, further comprising a control terminal, the charger simulation device is connected to the control terminal. 8. The battery detection system according to claim 4, wherein the charger simulation device is a programmable power supply.